mirror of
https://github.com/Keyslam-Group/Concord.git
synced 2025-08-20 21:38:29 -04:00
a65f88dd5e
main changes: - add parameter and return types where applicable - use @module and @classmod tags at the top of files - remove some redundant descriptions of return values, especially for functions that return a boolean recommended next steps: - more consistent grammar - add links to classes and functions in descriptions where appropriate - be consistent about naming Systems vs. SystemClasses and Components vs. ComponentClasses
48 lines
1.4 KiB
Lua
48 lines
1.4 KiB
Lua
--- Container for registered SystemClasses
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-- @module Systems
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local PATH = (...):gsub('%.[^%.]+$', '')
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local Type = require(PATH..".type")
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local Systems = {}
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--- Registers a SystemClass.
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-- @tparam string name Name to register under
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-- @tparam System systemClass SystemClass to register
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function Systems.register(name, systemClass)
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if (type(name) ~= "string") then
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error("bad argument #1 to 'Systems.register' (string expected, got "..type(name)..")", 3)
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end
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if (not Type.isSystemClass(systemClass)) then
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error("bad argument #2 to 'Systems.register' (systemClass expected, got "..type(systemClass)..")", 3)
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end
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if (rawget(Systems, name)) then
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error("bad argument #2 to 'Systems.register' (System with name '"..name.."' is already registerd)", 3)
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end
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Systems[name] = systemClass
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systemClass.__name = name
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end
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--- Returns true if the containter has the SystemClass with the name
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-- @tparam string name Name of the SystemClass to check
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-- @treturn boolean
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function Systems.has(name)
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return Systems[name] and true or false
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end
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--- Returns the SystemClass with the name
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-- @tparam string name Name of the SystemClass to get
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-- @return SystemClass with the name
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function Systems.get(name)
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return Systems[name]
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end
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return setmetatable(Systems, {
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__index = function(_, name)
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error("Attempt to index system '"..tostring(name).."' that does not exist / was not registered", 2)
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end
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})
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